iio: chemical: mhz19b: Fix error code in probe()

Return -ENOMEM if devm_iio_device_alloc() fails.  Don't return success.

Fixes: 4572a70b3681 ("iio: chemical: Add support for Winsen MHZ19B CO2 sensor")
Signed-off-by: Dan Carpenter <dan.carpenter@linaro.org>
Reviewed-by: David Lechner <dlechner@baylibre.com>
Acked-by: Gyeyoung Baek <gye976@gmail.com>
Link: https://patch.msgid.link/aBtZFLFlr0slcYSi@stanley.mountain
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@huawei.com>

diff --git a/drivers/iio/chemical/mhz19b.c b/drivers/iio/chemical/mhz19b.c
index c0052ba..3c64154 100644 (file)
--- a/drivers/iio/chemical/mhz19b.c
+++ b/drivers/iio/chemical/mhz19b.c
@@ -276,7 +276,7 @@ static int mhz19b_probe(struct serdev_device *serdev)
 
        indio_dev = devm_iio_device_alloc(dev, sizeof(*st));
        if (!indio_dev)
-               return ret;
+               return -ENOMEM;
        serdev_device_set_drvdata(serdev, indio_dev);
 
        st = iio_priv(indio_dev);